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Document ID: c02523353

Version: 1

Advisory: HP Z400, Z600, Z800 Workstations - SYSTEM BIOS UPGRADE REQUIRED; Certain Intel Processors May Cause Unpredictable System Behavior

Notice:: The information in this document, including products and software versions, is current as of the release date.The document is subject to change without notice.

Release date : 21-Sep-2010

Last updated : 21-Sep-2010

HP Z400, Z600, Z800 Workstations - SYSTEM BIOS UPGRADE REQUIRED; Certain Intel processors may cause unpredictable system behavior
CAUTION: This system BIOS upgrade is considered a critical fix and is required to correct the issue detailed below. HP strongly recommends immediate application of required critical fixes. Failure to perform the required action could leave the workstation or desktop in an unstable condition, which could potentially result in system lockups or failures, or data loss.
Intel has provided a microcode update to HP as a critical software fix. This Intel microcode update addresses an issue that may result in unpredictable system behavior. HP is making available system BIOS upgrades that integrate the updated Intel microcode to address this issue. While the potential for occurrence of this issue is extremely rare, HP strongly recommends upgrading the system BIOS to the version listed in the RESOLUTION section (or later). Intel has indicated that the microcode update has no known measurable performance impact and provides a complete and comprehensive resolution to this issue.
This issue will be documented in an updated version of the Intel Processor Specification Update for all affected processors.
IMPORTANT: This condition is not specific to HP Z400, Z600, or Z800 Workstations and can affect any desktop or workstation that uses the Intel Xeon Processor 3600 or 5600 sequences.
While the implications of the issue are difficult to quantify, any of the following symptoms can occur:
  • The workstation may hang or present a machine check error when transitioning out of a C6 sleep state.
NOTE: One or more of the links above will take you outside the Hewlett-Packard Web site. HP does not control and is not responsible for information outside of the HP Web site.


Information in this document applies to the listed systems configured as follows:
  • HP Z400 Workstation
  • HP Z600 Workstation
  • HP Z800 Workstation
Operating Systems:
  • Non-OS Specific
To prevent the unlikely occurrence of this issue, upgrade the workstation or desktop system BIOS to a version listed for your specific system. System BIOS listed includes the required Intel microcode updates to address this issue. Applying the latest system BIOS ensures that the most current version of Intel microcode is installed in the system.
Workstation BIOS update:
  1. Select your workstation model.
  2. Select "Download drivers and software".
  3. Select your operating system.
  4. Select "BIOS".
  5. Download the BIOS package for your specific workstation and carefully read the instructions before proceeding.
  • HP Z800 Workstation system BIOS v 3.12 or newer
    • SP50379 or newer for Windows operating systems
    • SP50383 or newer for Linux operating systems
  • HP Z600 Workstation system BIOS v 3.12 or newer
    • SP50378 or newer for Windows operating systems
    • SP50382 or newer for Linux operating systems
  • HP Z400 Workstation system BIOS v 3.12 or newer.
    • SP50380 or newer for Windows operating systems
    • SP50381 or newer for Linux operating systems

Hardware platforms affected : HP Z400 Workstation, HP Z600 Workstation, HP Z800 Workstation

Operating systems affected : Not applicable

Software affected : Not applicable

Support Communication Cross Reference ID : IA02523353

HP Inc. shall not be liable for technical or editorial errors or omissions contained herein.The information provided is provided "as is" without warranty of any kind.To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restorationThe information in this document is subject to change without notice.HP Inc. and the names of HP products referenced herein are trademarks of HP Inc. in the United States and other countries.Other product and company names mentioned herein may be trademarks of their respective owners.





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